Best purchase of my lifetime I love this thing It is truly a night and day difference. I had a little trouble getting the washer out even with the magnet so much so that I was ready to give up. The problem was once I got the bolt off I twisted a bit right away and ended up creating some pressure on the washer not letting it come up even. Once I retrieved the washer It was smooth sailing. I have owned 2 jeep cherokees and one grand cherokee. My first chereokee was lifted and I put all the bolt on extra performance parts into it: Intake, Jet chip, Borla, throttle body spacer. After all was said and done I honestly don't feel like that made as much difference as this one little part. I was hesitant reading all of the reviews but now have found them all to be right on. I am looking forward to hear what HDDP has to say about this. Thanks again Jody for putting this group buy together and taking care of all of us.